The two-time U.S. Open finalist and former world No. 1 called her schedule “unacceptable” after the 6-2, 6-7, 6-1 loss, especially compared to the favorable schedule given to Maria Sharapova.

“We understand why she is dissatisfied,” Widmaier said. “When you see the stress on the scheduling system because of the sheer number of matches that had to be played, it would be tough for it to be perfect for everyone.

“We understand Caroline’s point of view, we’ve heard her. We always want to do the best we can. We’re sorry she’s disappointed.”

“I think, you know, putting out a schedule where the No. 5 in the world is playing on court five, fifth match on, after 11 (p.m.), I think that’s unacceptable,” Wozniacki said after her early exit from the final Grand Slam event of the season.

That’s when Wozniacki brought up Sharapova, who has played both her matches in Ashe Stadium despite being a wild-card entry following a 15-month drug ban.

“And when you look on center court,” Wozniacki continued, “I completely understand the business side of things and everything — but someone who comes back from a drug sentence, performance enhancing drugs, and then all of the sudden gets to play every single match on center court, I think that’s a questionable thing to do.

“It doesn’t set a good example.”

Maria Sharapova soaks in the love from the fans at Arthur Ashe Stadium after Monday's Open return.

(Elsa/Getty Images)

She then made a case for why she should be getting the Sharapova treatment from the U.S. Open schedule makers.

“And I think someone who has fought their way back from injury and is No. 5 in the world deserves to play on a bigger court than Court 5,” she said.

Her match — although originally scheduled for Court 5 — was eventually moved to Court 17 (“which is a really nice court actually”) as the USTA struggled to get 87 singles matches played Wednesday due to Tuesday’s rain.

The USTA said they were simply being “consistent with our policy” when it came to giving Sharapova a wild-card entry.

“(Wozniacki) has the right to express her opinion,” Widmaier said. “In our decision to provide Maria Sharapova a wild card, she had served her suspension. When we made our wild card decision, that was in the past. It had transpired. The tennis anti-doping program was fulfilled.”

Widmaier pointed to former champions Martina Hingis, Lleyton Hewitt, Juan Martin del Potro and Kim Clijsters all receiving wild card entry into the main draw in the past.

“Now Maria Sharapova is the fifth.”

Sharapova made her Grand Slam return on Monday night when she upset No. 2 Simona Halep on Ashe. The 2006 U.S. Open champ had missed the previous six Grand Slam events after testing positive for the banned substance meldonium at the 2016 Australian Open.

Sharapova then rallied to beat Hungary’s Timea Babos Wednesday night in three sets back inside Ashe.